Overview Product Description 2MBL52 5.2" Bushing type, A (4L), B (5L & 5V) belts, SHEAVE,TWO GROOVE (Rim only) Requires Type L "QD" Bushing, Two Groove Sheave, OD 5.25 Inches, Bushing Required H, 4L or A Belt Pitch Diameter 4.5 Inches, 5L or B Belt Pitch Diameter 4.9 Inches, Cast Iron , same as Browning 2BK55H or Grainger 3X558 Product Videos Custom Field Product Reviews